RV Investigator Voyage IN2021_V01 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2021_V01, titled: "Quantifying krill abundance for krill monitoring and management off the Australian Antarctic Territory," which departed Hobart on the 29th January 2021 and returned to Hobart on the 24th March 2021 (AEST).

The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution.

The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged [continuously/sporadically] for the extent of the voyage.

Data are stored in *.raw (972 files 16.8 GB) raw and *.seg (7024 files 5.35 GB) segy formats at CSIRO.

The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain.

Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request

本记录描述了“RV Investigator”号科考航次IN2021_V01采集的海底剖面仪（sub bottom profiler）数据，该航次主题为“澳大利亚南极领地周边磷虾丰度量化监测与管理”。本航次于2021年1月29日从霍巴特起航，2021年3月24日（澳大利亚东部标准时间）返回霍巴特。

本航次采用Kongsberg SBP120型海底剖面仪采集数据，该设备可获取海底下方不同沉积界面的镜面反射信号。SBP120的角分辨率为3°×3°。

该回声测深仪的扫频范围为2.5 kHz至7 kHz。SBP120在整个航次期间采用[连续/间断]模式进行记录。

数据以两种格式存储于澳大利亚联邦科学与工业研究组织（CSIRO）：*.raw原始格式（共972个文件，总大小16.8 GB）与*.seg SEG-Y格式（共7024个文件，总大小5.35 GB）。

SEG-Y格式数据已应用实时处理流程，该流程包含增益校正、带副本整形的匹配滤波、瞬时振幅属性计算以及时变增益处理。

有关本数据集的更多详细信息可查阅GSM数据采集与处理报告。额外数据产品可根据申请提供。